For Entry #4, I like the clean lines and the use of minimal colour. I like the clever way you made the G8 look like a pencil, but is there any way you can make it more obvious that it's a pencil/pen?
For Entry #10, I like that the logo stands out more because of the bold text. The pen isn't very obvious though.
For Entry #5, I like the graphic of the pencil, but it would look cleaner without the red circle.
For #39, #59 and #60, can you make the pencil lines thinner (about the same width as the logo text lines)? The pencil graphic looks a bit heavy compared to the logo text. Also, can you make the pencil graphic a bit longer and narrower?